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Ping all hosts on 192.168.1.0/24
Will report back IP address's of all hosts that are UP.

Print current running shell, PID
works as well as echo $0, but also prints process id, which pts you're using. echo $SHELL doesn't always get updated when changing shells, so this is a better solution than that. Just one more variation on a theme.

Check executable shared library usage
provides list of shared libraries required by executable

Recording the desktop and an application audio source for webcast
You will have to use the sound preferences (record) to choose the audio source and set it to internal.

Send an email from the terminal when job finishes
Might as well include the status code it exited with so you know right away if it failed or not.

Download free e-books
Mask the user agent as firefox, recursively download 2 levels deep from a span host with a maximum of 1 redirection, use random wait time and dump all pdf files to myBooksFolder without creating any other directories. Host will have no way of knowing that this is a grabber script.

find all files containing a pattern, open them using vi and place cursor to the first match, use 'n' and ':n' to navigate

FizzBuzz in Perl
Just another FizzBuzz in Perl.

Tells which group you DON'T belong to (opposite of command "groups") --- uses sed
special thanks to XwZ :)

Stream audio over ssh
This will allow you to convert an audio file to wav format, and send it via ssh to a player on the other computer, which will open and play it there. Of course, substitute your information for the sound file and remote address You do not have to use paplay on the remote end, as it is a PulseAudio thing. If the remote end uses ALSA, you should use aplay instead. If it uses OSS, you should berate them about having a lousy sound system. Also, you're not limited to transmitting encoded as wav either, it's just that AFAIK, most systems don't come with mp3 codecs, but will play wav files fine. If you know SoX is installed on the remote end and has mp3 codecs, you can use the following instead: $ cat Klaxon.mp3 |ssh thelab@company.com play -t mp3 - this will transmit as mp3. Again, use your specific information. if you're not playing mp3s, use another type with the -t option


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